Question

Name the appropriate methods to separate the following mixtures
A)nitrogen from air. B)dye from blue ink.
C)cream from milk. D)pigments from natural colours

Answer 1

A. Fractional Distillation
B. Evaporation
C. Centrifugation
D. Chromatography

Answer 2

Appropriate methods:

A) Nitrogen from the air can be isolated by the method fractional distillation.

• The liquid oxygen and nitrogen are then separated by fractional distillation. The liquefied gas is get into bottom of a fractionating column.

B) Dye from ink can be separated by evaporation.

• Water has got vaporised and residue color left over.

C) Cream from milk can be separated by the method centrifugation.

• Centrifugation is the process where a mixture is separated through spinning

D) Pigments from natural colors can be separated by chromatography

• It is a way of getting out a chemicals mixture, which are in gas/liquid form, by getting them slowly adding another compound, which is basically a liquid/solid.

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